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降压电源

Other Parts Discussed in Thread: LM25117

本人需要12变5的降压电源,分别是5V10A和5V6A,输入变化范围很小,要求效率90以上,本人查到了LM25117和TSP40304两种降压芯片和LM25117的测试板,输出5V12A,请问测试板有卖的吗?什么价钱呢?